I can't speak about any of the one's you've mentioned since I've never heard any of them. My own personal preference is towards high current class A amps, or at least class A/B amps that run in class A up to a point. Not a very well known company, but AB Systems/AB International makes really high quality multi-channel home theater amplifiers. The looks are a bit plain, until you pop the lid. They're expensive, but Bob may still be running his 50% off promotion. You can e-mail him and ask about that. The only tradeoff is that with the 50% off you don't get the full 5 year warranty, you only get 1. However, you can buy more years for something like $150 a year or something like that.
There's also Cinepro, Cinenova, ATI, Outlaw (whose OEM is ATI), or a pro amp stack like the crown XLS 2500. These are just the ones I've heard personally and I wouldn't have a second thought recommending any of them. My advice is that you should get out there and try to listen to some of these amps.
Then again, there are two camps around these parts. All well designed amplifiers will sound more similar than different VS Amps have their own unique sound.